remove upload useless code

internal/file/uploader/multiworker.go

@@ -65,7 +65,6 @@ func (muer *MultiUploader) upload() (uperr error) {
 	uploadClient.SetTimeout(0)
 	uploadClient.SetKeepAlive(true)
 
-	for {
 	// 阿里云盘只支持分片按顺序上传，这里正常应该是parallel = 1
 	wg := waitgroup.NewWaitGroup(muer.config.Parallel)
 	for {
@@ -76,7 +75,7 @@ func (muer *MultiUploader) upload() (uperr error) {
 
 		wer := e.(*worker)
 		wg.AddDelta()
-			go func() {
+		go func() { // 异步上传
 			defer wg.Done()
 
 			var (
@@ -94,7 +93,7 @@ func (muer *MultiUploader) upload() (uperr error) {
 				}
 				close(doneChan)
 			}()
-				select {
+			select { // 监听上传进程，循环
 			case <-muer.canceled:
 				cancel()
 				return
@@ -134,7 +133,6 @@ func (muer *MultiUploader) upload() (uperr error) {
 				muer.updateInstanceStateChan <- struct{}{}
 			}
 		}()
-		}
 		wg.Wait()
 
 		// 没有任务了